1977
1993
1988
1977
1982
1985
1981
1986
1989
1978
1982
1991
1988
1988
1989
1980
2001
1989
1992
1977
1992
1988
1982
1999
1989
1978
1982
1980
1990
1978
2000
1995
1996
1974
1974
1989
1989
1979
1992
2003
2002
2003
1989
2002
2002
1999
2003
1999
2001
1984
1972
1972
2002
1981
1999
1971
1970
1970
1971
1971
2003
2001
1974
1982
1998
1988
1983
2001
2000
1992
1999
1977
1979
1972
1980
1996
1993
1993
1989
1979
1994
1987
1999
1979
1978
1990
1990
1991
1977
1994
1976
1982
1990
1984
1982
1995
1995
1980
1986
1980
1997
1981
1977
1983
1983
1983
1988
1977
1990
1995
1997
1977
1979
1989
1979
1986
1976
2001
1974
1986
1992
1992
1985
1982
1988
1988
1973
2000
1987
1988
1984
1988
1987
1989
1978
1987
1988
1977
1985
1983
1984
1984
1985
1985
1988
1985
1981
2000
1976
1986
1985
1977
1985
1980
Comments